X0306 4 2022-07-15 0 0001137091 POWER SOLUTIONS INTERNATIONAL, INC. PSIX 0001852699 Xykis Constantine C/O 201 MITTEL DRIVE WOOD DALE IL 60191 0 1 0 0 See Remarks Stock Appreciation Rights 2.00 2022-07-15 4 A 0 20000 0.00 A 2032-07-15 Common Stock 20000 45342 D The Issuer granted the stock appreciation rights (the "SAR") on July 15, 2022, pursuant to a Stock Appreciation Rights Agreement dated July 15, 2022 (the "Stock Agreement"), under the Issuer's 2012 Incentive Compensation Plan, as amended and restated (the "Stock Plan"). The SAR vests and becomes exercisable on July 15, 2023 (the "Vesting Date") provided if following the Transaction Date, the Issuer terminates Reporting Person's employment without Cause (as defined under the Stock Plan) on or prior to the Vesting Date, the SAR shall immediately vest in full and be exercisable in accordance with the Stock Plan and the Stock Agreement. Interim Chief Executive Office /s/ Constantine Xykis 2022-07-18